package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import lombok.val;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    //新增菜品
    @Transactional
    public void savewithFlavor(DishDTO dishDTO) {

        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);

        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);

        }

    }

    //菜品分页查询
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    //菜品删除
    @Transactional
    public void delectBench(List<Long> ids) {
        for (Long id : ids) {
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus()==StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> setmealIdsByDishIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIdsByDishIds!=null && setmealIdsByDishIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            dishFlavorMapper.delectByDishId(id);
//        }
        dishMapper.deleteByIds(ids);
        dishFlavorMapper.delectByDishIds(ids);


    }

    //菜品停售起售
    public void startOrStop(Integer status, Long id) {
        SetmealDish setmealDish=setmealDishMapper.getSetmealIdsByDishId(id);
        if(setmealDish!=null){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        Dish dish=Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);
    }

    //根据id查询菜品
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors=dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    //修改菜品
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);

        dishFlavorMapper.delectByDishId(dishDTO.getId());
        List<DishFlavor> flavors=dishDTO.getFlavors();
        if(flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);

        }

    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish=Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

//    //微信根据分类id查询菜品
//    public List<DishVO> listWithFlavors(Dish dish) {
//        List<Dish> dishlist = dishMapper.list(dish);
//        List<DishVO> dishVOList = new ArrayList<>();
//        for (Dish d : dishlist) {
//            DishVO dishVO = new DishVO();
//            BeanUtils.copyProperties(d,dishVO);
//            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());
//            dishVO.setFlavors(flavors);
//            dishVOList.add(dishVO);
//        }
//        return dishVOList;
//    }


    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

}
